As the title suggests, when delving into a full custom build where you plan to remove the stock fans and install a ton of water cooling into the chassis, once you start to ponder a push/pull orientation on a couple of double radiators, powering and maintaining the wiring of all of these fans is something most will overlook on their first glance of parts needed to complete a clean build. Of course, you could install a couple of fan controllers to allow you to install more than six fans, since most fan controllers stop there without the addition of any Y-splitters or any way of daisy-chaining the fans onto a single power connection. You could also go and buy a bunch of Molex to 4-pin fan adapter plugs, but going that route leads you into a real mess of PSU wires and stacks of Molex adapters that you have to hide.
What if there was a small, self contained device that would allow you to simply plug multiple fans into it, and have only one power source? This would alleviate most of the wiring issues associated with the fan controllers and Molex adapters right out of the gate. You would also be able to locate this device anywhere you see fit to allow all of your fans to easily be plugged in without the need for extensions as you would likely need to connect a controller to fan wiring in the bottom of the chassis. With a device such as this, I can see this becoming the new must have device for most, if not all custom case builds, just like braided cables and lighting are.
This is where NZXT steps in to offer something that used to be, in its original form, a fan hub that was sent inside of the new Switch cases. Because the chassis had a load of fans, and due to the size of those cases, fan wiring was an issue, and they needed to devise a solution. Once the device was a success in the cases, they took the original design, wrapped it in a clean looking black plastic box, threw their name on the front of it, and even added some LED lighting to it, so if you do decide to show it, it looks even better once powered on.
Now any system builder, no matter the chassis manufacturer, can still have this sweet little 10 port fan hub that NZXT calls the Grid.